Hi, little control in the butler brought you a regulating valve installation requirements and daily maintenance, are dry, learning together!

1, installation requirements,
The installation position of (1) the regulator should meet the requirements of process design, and should be near the related indicating instrument at a time, when used in bypass valve manual for instrument can observe time;
(2) the regulator should be arranged on the ground or platform and facilitate operation and maintenance;
(3) the regulator should be vertical installation in horizontal pipe runs are made, under the special circumstances can be installed in horizontal or inclined, but must add support;
(4) control valve group (including regulating valve, by-pass valve, cut-off valve and drain valve) facade installation, the valve should be installed in the bypass below the nominal diameter of less than 25 mm regulator, also can be installed in the upper part of the bypass;
(5) the regulator bottom is apart from the ground or on the surface of the platform clearance should not be less than 400 mm. For the single and double seat valve valve core, should be set aside at the bottom of the valve body space of the pump valve core;
(6) the regulator membrane on above shall be not less than 2 mm clearance, regulating valve and bypass valve and the layout should be measures open position;
(7) should choose the gate valve, cut-off valve should choose cut-off valve, by-pass valve and bypass valve nominal diameter larger than 150 mm, the gate, optional two cut-off valve and control valve arrangement straight in a straight line;
(8) side of the entrance of the regulating valve and the low point of the pipeline between the cut off valve upstream of the regulator should be set drainage valve, drain valve optional gate valve;
(9) in the medium containing solid particles on the pipeline of the regulating valve and bypass valve is decorated in the same plane or decorate the bypass valve in the regulator below;
(10) at low temperature, high temperature pipes on the regulator set should be one of two stents are fixed bracket, the other one is the sliding bracket;
(11) must pay attention to the process of regulating valve position have special requirements,

2, the regulating valve repair, should check which parts mainly
Regulator is our time to repair, so in repair is the focal point which parts need to check? The following will introduce you to,
1, the body wall
In high pressure and corrosive medium, the body wall, diaphragm valve diaphragm often impacted by the media and corrosion, must check pressure point corrosion situation,
2, the valve core
One of the moving parts of the valve core is the regulator, the erosion of the medium is relatively serious, carefully check whether the various parts of the valve core maintenance corrosion, wear,
Especially in the case of high pressure differential and valve core wear and tear caused by cavitation cavitation phenomenon more serious damage to the valve core should be replaced check packing: check whether the packing asbestos rope is dry, such as using ptfe packing, should pay attention to check whether the aging and whether the mating surface damage,
3, the seat
Because when working medium infiltration, fixed seat with the thread surface is susceptible to corrosion and make the seat is flabby,
4, diaphragm and o-rings
Wearing parts, check whether ageing,
5, packing
When regulator with graphite or asbestos packing, should be about three months to add a lubricating oil on the packing, in order to make sure the valve flexible motion,
If found that packing pressure cap pressure very low, should complement packing; Such as ptfe found dry packing hardening, should change in time,
6, air
Frequent checks of your equipped with adjustable valve locator to air, to ensure the quality of air, water and other impurities,